org.h2.result

类 DefaultRow

java.lang.Object

org.h2.value.VersionedValue<Value>

org.h2.value.Value

org.h2.result.SearchRow

org.h2.result.Row

org.h2.result.DefaultRow

所有已实现的接口:

HasSQL, Typed

直接已知子类:

Sparse

public class DefaultRow
extends Row

The default implementation of a row in a table.

字段概要

字段

限定符和类型	字段和说明
protected Value[]	data The values of the row (one entry per column).
static int	MEMORY_CALCULATE The constant that means "memory usage is unknown and needs to be calculated first".

从类继承的字段 org.h2.result.SearchRow

key, MATCH_ALL_ROW_KEY, ROWID_INDEX

从类继承的字段 org.h2.value.Value

ARRAY, BIGINT, BINARY, BLOB, BOOLEAN, CHAR, CLOB, DATE, DECFLOAT, DOUBLE, EMPTY_VALUES, ENUM, GEOMETRY, INTEGER, INTERVAL_DAY, INTERVAL_DAY_TO_HOUR, INTERVAL_DAY_TO_MINUTE, INTERVAL_DAY_TO_SECOND, INTERVAL_HOUR, INTERVAL_HOUR_TO_MINUTE, INTERVAL_HOUR_TO_SECOND, INTERVAL_MINUTE, INTERVAL_MINUTE_TO_SECOND, INTERVAL_MONTH, INTERVAL_SECOND, INTERVAL_YEAR, INTERVAL_YEAR_TO_MONTH, JAVA_OBJECT, JSON, MIN_LONG_DECIMAL, NULL, NUMERIC, REAL, ROW, SMALLINT, TIME, TIME_TZ, TIMESTAMP, TIMESTAMP_TZ, TINYINT, TYPE_COUNT, UNKNOWN, UUID, VARBINARY, VARCHAR, VARCHAR_IGNORECASE

从接口继承的字段 org.h2.util.HasSQL

ADD_PLAN_INFORMATION, DEFAULT_SQL_FLAGS, NO_CASTS, QUOTE_ONLY_WHEN_REQUIRED, REPLACE_LOBS_FOR_TRACE, TRACE_SQL_FLAGS

构造器概要

构造器

构造器和说明
DefaultRow(Value[] data)
DefaultRow(Value[] data, int memory)

方法概要

限定符和类型	方法和说明
protected int	calculateMemory() Calculate the estimated memory used for this row, in bytes.
void	copyFrom(SearchRow source) Copy all relevant values from the source to this row.
int	getColumnCount() Get the column count.
int	getMemory() Get the estimated memory used for this row, in bytes.
Value	getValue(int i) Get the value for the column
Value[]	getValueList() Get values.
boolean	hasSharedData(Row other) Check whether this row and the specified row share the same underlying data with values.
void	setValue(int i, Value v) Set the value for given column
String	toString()

从类继承的方法 org.h2.result.Row

get, get, hasSameValues

从类继承的方法 org.h2.result.SearchRow

compareTypeSafe, equals, getKey, getSQL, getString, getType, getValueType, hashCode, isNull, setKey

从类继承的方法 org.h2.value.Value

add, castTo, charLength, clearCache, compareTo, compareWithNull, containsNull, convertForAssignTo, convertTo, convertTo, convertTo, convertTo, convertTo, convertToAnyArray, convertToAnyRow, convertToBigint, convertToBoolean, convertToChar, convertToDate, convertToDouble, convertToEnum, convertToGeometry, convertToInt, convertToInt, convertToJavaObject, convertToReal, convertToSmallint, convertToTinyint, convertToUuid, divide, getBigDecimal, getBoolean, getByte, getBytes, getBytesNoCopy, getDouble, getFloat, getHigherOrder, getInputStream, getInputStream, getInt, getLong, getReader, getReader, getShort, getSignum, getTypeName, getUnsupportedExceptionForOperation, isFalse, isTrue, modulus, multiply, negate, octetLength, subtract

从类继承的方法 org.h2.value.VersionedValue

getCommittedValue, getCurrentValue, getOperationId, isCommitted

从类继承的方法 java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

从接口继承的方法 org.h2.util.HasSQL

getSQL, getTraceSQL

字段详细资料

MEMORY_CALCULATE

public static final int MEMORY_CALCULATE

The constant that means "memory usage is unknown and needs to be calculated first".

另请参阅:

常量字段值

data

protected final Value[] data

The values of the row (one entry per column).

构造器详细资料

DefaultRow

public DefaultRow(Value[] data)

DefaultRow

public DefaultRow(Value[] data,
                  int memory)

方法详细资料

getValue

public Value getValue(int i)

从类复制的说明: SearchRow

Get the value for the column

指定者:

getValue 在类中 SearchRow

参数:

i - the column number (starting with 0)

返回:

the value

setValue

public void setValue(int i,
                     Value v)

从类复制的说明: SearchRow

Set the value for given column

指定者:

setValue 在类中 SearchRow

参数:

i - the column number (starting with 0)

v - the new value

getColumnCount

public int getColumnCount()

从类复制的说明: SearchRow

Get the column count.

指定者:

getColumnCount 在类中 SearchRow

返回:

the column count

getMemory

public int getMemory()

从类复制的说明: SearchRow

Get the estimated memory used for this row, in bytes.

指定者:

getMemory 在类中 SearchRow

返回:

the memory

toString

public String toString()

覆盖:

toString 在类中 Value

calculateMemory

protected int calculateMemory()

Calculate the estimated memory used for this row, in bytes.

返回:

the memory

getValueList

public Value[] getValueList()

从类复制的说明: Row

Get values.

指定者:

getValueList 在类中 Row

返回:

values

hasSharedData

public boolean hasSharedData(Row other)

从类复制的说明: Row

Check whether this row and the specified row share the same underlying data with values. This method must return false when values are not equal and may return either true or false when they are equal. This method may be used only for optimizations and should not perform any slow checks, such as equality checks for all pairs of values.

覆盖:

hasSharedData 在类中 Row

参数:

other - the other row

返回:

true if rows share the same underlying data, false otherwise or when unknown

copyFrom

public void copyFrom(SearchRow source)

从类复制的说明: SearchRow

Copy all relevant values from the source to this row.

指定者:

copyFrom 在类中 SearchRow

参数:

source - source of column values